怎样简便就怎样算.5.5×17.3+2.7×5.51.
答案:1 悬赏:40 手机版
解决时间 2021-02-19 12:01
- 提问者网友:雨不眠的下
- 2021-02-18 18:46
怎样简便就怎样算.5.5×17.3+2.7×5.51.
最佳答案
- 五星知识达人网友:纵马山川剑自提
- 2021-02-18 19:07
(1)5.5×17.3+2.7×5.5
=5.5×(17.3+2.7)
=5.5×20
=110
(2)1.25×(6.2-5.9)×80
=1.25×0.3×80
=1.25×80×0.3
=100×0.3
=30
(3)1.5×99
=1.5×(100-1)
=1.5×100-1.5
=150-1.5
=148.5
(4)70.3-17.48÷7.6
=70.3-2.3
=68
=5.5×(17.3+2.7)
=5.5×20
=110
(2)1.25×(6.2-5.9)×80
=1.25×0.3×80
=1.25×80×0.3
=100×0.3
=30
(3)1.5×99
=1.5×(100-1)
=1.5×100-1.5
=150-1.5
=148.5
(4)70.3-17.48÷7.6
=70.3-2.3
=68
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